Differentiate phone orders

Differentiate phone orders from orders placed on the site

Please, adapt following code to modify order numbers.

add_filter( 'woocommerce_order_number', function($num,$order){
if( $order->get_meta('_wpo_order_creator') )
   $num = "PH" . $num;
 return $num;
}, PHP_INT_MAX, 2 );

add_filter( 'woocommerce_order_number', function($num,$order){

if( $order->get_meta('_wpo_order_creator') )

$num = "PH" . $num;

return $num;

}, PHP_INT_MAX, 2 );

Phone Orders for WooCommerce

Differentiate phone orders